But definitely don't get a biopsy or colposcopy during pregnancy! They must be crazy! I lost my baby due to one in 2009. They are not usually recommended.
And even if you don't miscarry from the trauma, laila is right, it can cause your cervix to become incompetent. Besides it is pointless because you can not get treated in pregnancy.. like what are they gonna do? Radiation?
On top of that, testing in pregnancy is fairly stupid because it skews results and can produce false positives.
Did they give your your exact results? Are you already CIN 3 or is it still PAP 3-5? PAP 3-5 is nothing to worry about and even CIN is managable. I had CIN 3 when I was pregnant with my son. While Pap is just abnormal cells, CIN is a certain amount of cancerous cells. Starting at CIN3 is where they recommend treatment. I got a LEEP (laser surgery) and my cells were still there. It was pointless scarring of my cervix that will always cause me to not produce adequate cervical mucuous, which ca be bad for conceiving, puts me at high risk for a shortened cervix with every pregnancy and natural birth will be a challenge because the scar tissue won't stretch well.
Pregnancy is rejuvenating to the body. It literally regenerates all your cells. There are many studies on this. At birth you shed cells from your cervix too so you have 2 things that will help your body heal during this time.
After I delivered I changed my diet, lived as natural as possible, took Pectasol C for cellular health and after a year cancer and HPV were gone. I would really give it some time. This is not an illness that spreads or advances fast. We all have cancerous cells in the body but in case of HPV they can become to numerous because they increase when your body is fighting an infection. Some scientists even believe it is a sort of protection mechanism.
After years of research I don't buy into standard cancer knowledge anymore. Most people die of the treatments and not the actual cancer. Radiation and Chemo have many, many critics, yet are continued because they make a ton of money.
Many natural health experts have tried to demonstrate there are natural ways to heal from cancer and they don't get credit because their methods are just free health advice. I know quite a few people, including myself that followed it and healed.
If you want an example of how corrupt the system is go to "Cosmetics Safety Database" by the environmental working group. Type in shampoos and lotions you use and you will find 99% of them will contain carcinogens or otherwise cancer promoting properties (also neuro toxins, endocrine disruptors which is hormonal balance, reproductive toxins) The FDA likes to speak of "safe amounts" that even if certain amounts were safe completely go out the window if you use more than one product. I actually quit working for a cosmetic chemicals company when I learned what is put into these products.
I would highly recommend tossing out all of it and strictly double checking ingredients of organic brands.
Food is anothed issue. It is not possible to avoid everything problematic but by eating organic, fresh foods, no ready to eat microwave dinners etc., you lower your exposure. Your body can detox well to some degree, but not an overload.
My advice would be live healthy and give your body some time. Get checked again about 3 and 6 months after pregnancy (best when your hormones have normalized) And then decide. You may have healed or at least improved in which case you may heal eventually.
You can tell your doctors you want to wait until after pregnancy. If they don't listen, find better doctors. I was taken care off by high risk specialists that did not even worry about my cancer.
I was super determined to get better thinking of my baby and wanting to be there for him all my life. Mind you I had a ton of other chronic diseases too. Your mind really matters in this. If you believe you will heal, you have much better chances. I healed from everything. Diseases that one can not even heal from supposedly.
The painful intercourse could very well just have been due to lingering pregnancy hormones. I had it until I took herbs to regulate my hormones and the pain just went away.
I have to get a colposcopy/biopsy in 4 weeks. I'm particularly nervous because intercourse had been painful ever since my first full term pregnancy, but I just brushed it off as the result of so much trauma to my lady parts with a 10 pound baby. Now I'm freaking out that it was indication that something is amiss. 
